The little creatures of Minutia lived in peace and harmony, until the night the meteor smashed into Mount Boom! A strange force transformed the slimy Slugs who lived there into a gang of greenery-gobbling goons – and now, the Slugs captured the Best Fiends’ families!

To fight back the Slugs and reunite their families, the Best Fiends have to grow and level up, discover their special powers and prepare for the mystery that awaits at Mount Boom.